Improved barber and dental chair



NZPUERS. PHOTO-1.17HOGRAFHER4 WASHINGTON, D Cy @anni 5mm @met @Wina MICHAEL LEIDECKER, ROCHESTER, NEW YORK` Lette/rs Patent N 102,688, dlztell May 3, 1870.

IMPROVED BARBER .AND DENTAL CHAIR.

The Schedule referred to in these Letters Patent and making parz o? me same To all whom it may concern Be it known that l, MICHAEL LEIDECKER, of the city of Rochester', in the county of Monroe and Statev ot' New York, have invented a certain new and useful Improvement in Barber and Dental Chairs, of which the following is a specification.

Nature of I nt'eutz'on. This -invention consists in a new and improved arrangement for adjusting the angle oi' the chair.

General Description.

In the drawings- Figure l is a sectional elevation.

Figure 2, a perspective view oi the parts for adjusting the chair.

Figure 3, a similar viewl of' the parts for adjustingv the head-rest.

l A is the base oil the chair, and

B, the seat, pivoted so as to turn to any desired angle. I

To the front cross-piece of the base is rigidly secured a catch-blmzk, O, and to the bott-om oi' the seatframe is pivoted a depending pawl-arm, I).

These parts have, respectively, teeth b l1 which engage, those on the pawl-nrni being ot' considerable extent, to allow the desired adjustment.

'lo the lower end oil the pawl-arln is pivoted a togfiat springs, K, attached at the top to the seat-frame,

and pressing against the pawl-arln, as clearly shown. Foot-levers and ratchets are in common use for this purpose, but, as ordinarily arranged, are not equivalent to my device. I am enabled to make the engage- `nient in the front 0f the chair, and centrally, and at the same time carry the'conneetion across to the rear,

and to the right-hand corner. This brings the operating parts at the right position for the operator, and also enables the old t'orm of the pivoted seat and base to be employed without the use of' lball-and-Socket: joints.

The spring or springs K, combined with the pawl* arm, have a special advantage, aside from keeping the parts in engagement, inasmuch as a degree ofstiii'ness and resistance is imparted to the back action of. the disengaging arrangement, clear through to the pedal.

-The head-rest standard L-has its top spread into a broad lateral bearing, L'.

This is divided into a series of parallel forks or arms, ff f, projecting backward, in line with the chair, and having equal spaces, g g, between them.

The bottom of the head-rest has a metallic plate, M, withtwo ways or ribs, h h, standing out` from the face, and'of such size and such distance apart as to enter two of the slots q g, between the i'orksf f, closely filling the space.

On the faces of these ways rest clamp-lugs, 7c la, overlapping the forks f f, to which they clamp, to hold the head-rest in place, by means of screws ym m.

By simply set-ting the head-rest out or in, more or less, I can get the longitudinal adjustment, and, by drawing out, and insert-ing in other positions, I attain the desired lateral adjustment. This arrangement, while it allows the desired adjustment, holds the beadrest in position much more securely than in other arrangements, as no slipping or sliding can occur.

What l claim, and desire to secure byvLetters Patr ent, is-

The arrangement of the toothed block C, pawl-arm I), spring or springs li, toggle-amis E G, shaft H, and pedal I, when combined with the parts A B ot' the chair, in the manner described, and for the purpose speci tied.

In witness whereof I have herennto'si'gnml my name in the presence of two subscribing witnesses. MICHAEL LEIDEGKER.

-Witnesses:

R. F. Oseoon, Gno. W. MIAT'r. 

